| Free trial version | Subscribed version |
| User-friendly web address | • | • |
| Usernames need only be unique to group | • | • |
| Schedule group's events | • | • |
| Optional event times | • | • |
| Add file attachments to events | | • |
| Members may add comments to events | | • |
| Customisable event fields | | • |
| Schedule members' unavailability | • | • |
| At-a-glance colour-coded availability / involvement | • | • |
| Schedule other day notes | • | • |
| Up to 5 flags for events and day notes | | • |
| Cut, copy and paste all diary items | • | • |
| At-a-glance confirmation checking / updating | • | • |
| Events etc can be added up to 3 years ahead | • | • |
| Optional email reminders to selected members | • | • |
| Publish selected events on Diary 4 group homepage | • | • |
| Publish selected events on own website or MySpace | • | • |
| Access for 30 days | • | |
| Access beyond 30 days | | • |
| Up to 4 group members | • | |
| Up to 20 group members | | • |
| Web address can be changed | • | • |
| Group administrator can be changed | • | • |
| Free technical support via help.diary4.com | • | • |
: more information